JP2018119259A - Sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding door device which can align two door units on one straight line and have them abutted on with each other, when an opening is closed by the two door units.SOLUTION: At an inner end side parallel link 52 for supporting a second door unit 8, a control lever 52a including a cam driven roller 52b at a tip is continuously provided. At a first door unit 7, a cam rail 17 is provided which acts on the cam driven roller 52b and which allows the second door unit 8 to move parallel in a lateral move path of the first door unit 7. First door unit lock means 36 comprises a fixed stopper 42, and a movable stopper 40 provided at a terminal end part of the cam rail 17. The movable stopper 40 is moved from a forward limit position to a backward limit position against an energization force by the cam driven roller 52b moving from a position before the terminal end to the terminal end of the cam rail 17, and moves from the backward limit position to the forward limit position by the energization force by the cam driven roller 52b moving in a direction being separated from the terminal end of the cam rail 17.SELECTED DRAWING: Figure 20

Description

  The present invention relates to a sliding door device in which an opening is closed by a first door unit and a second door unit that are serially connected in the direction of the lateral path on the same lateral path.

  As a sliding door device of this type, as described in Patent Document 1, a first single door unit that can move laterally in the entire first lateral movement path and a lateral movement in parallel with the first lateral movement path. It is supported by a laterally supported laterally movable body via a pair of parallel links in the lateral direction, and can be translated back and forth between a first lateral movement path on the inside and a second lateral movement path on the outside. A single second door unit is provided that can freely move across the entire lateral movement path. The first door single unit opened state in which the first door unit overlaps inside the second lateral movement path and the second door single unit translated in the second lateral movement path are closed in series. It is configured to be able to switch to a single open state of the second door overlapped on the outside of the single door in the state, and a pair of parallel movement directions A control lever with a cam driven roller at the tip is connected to the inner end side parallel link close to the first door unit in the closed state in series. A cam rail is provided that acts on the cam follower roller to translate the second door unit from the second lateral path into the first lateral path when the state or the second door unit is opened in series. Sliding door devices are known.

JP 2003-138835 A

  In the sliding door device described in the above-mentioned Patent Document 1, when the second door alone is opened to switch to the second door alone open state among the first second door alone in the series fully closed state, When the second door unit is translated from the first lateral path into the second lateral path by the action of the cam rail and the cam driven roller, the first door unit can be held in the closed position. As a result, there was a problem that the first door alone moved in the opening direction from the closed position. In order to solve this problem, the applicant has proposed a locking means for locking the first door unit in the closed position in conjunction with the opening of the second unit. However, since the second door alone does not work unless it is opened by a certain distance, the first door alone may unexpectedly move in the opening direction from the closed position.

The present invention proposes a sliding door device that can solve the above-mentioned conventional problems, and the sliding door device according to the present invention understands the relationship with embodiments described later. For the sake of simplicity, when the reference numerals used in the description of the embodiment are shown in parentheses, the first door unit (7 ) And a laterally movable body (51) supported so as to be laterally movable in parallel with the first lateral movement path (9) through a pair of parallel links (52, 53) in the lateral movement direction, A single second door that can be translated back and forth between the lateral movement path (9) and the outer second lateral movement path (10) and can move laterally throughout the second lateral movement path (10). 8), the first door unit (7) and the second door unit (8) are connected in series in the first lateral movement path (9), and the second door unit (8) is Translated into two lateral movement paths (10) The first door single unit opened state in which the first door single unit (7) overlaps the second door single unit (8) translated in the second lateral movement path (10), and the series closed state. The first door unit (7) at the outside of the first door unit (7) is configured to be switched to the open state of the second unit door unit (7). A control lever (52a) with a cam driven roller (52b) at the tip is connected to the inner end side parallel link (52) close to the single unit (7). When the first door alone opened state or the second door alone opened state is changed to the series closed state, it acts on the cam driven roller (52b) to move the second door alone (8) into the second lateral movement path (10). In the sliding door device provided with the cam rail (17) that translates into the first lateral movement path (9) from
A first door unit locking means (36) is provided, and this locking unit (36) is movable at a terminal portion of the cam rail (17) so as to be movable back and forth in a horizontal direction orthogonal to the door unit lateral movement direction. The contact between the stopper (40) and the movable stopper (40) in the forward limit position prevents the first door unit (7) in the series closed state from laterally moving to the first door unit opened state. The movable stopper (40) is biased and held at the forward limit position, and the cam driven roller (52b) moves from the front end to the end of the cam rail (17). By the cam driven roller (52b) that moves from the forward limit position to the reverse limit position against the biasing force and moves away from the end of the cam rail (17), Configured to move to the forward limit position That.

  In the sliding door device having the above-described configuration, when the first second door unit is in a series fully closed state, the cam driven roller at the tip of the control lever is at the end of the cam rail on the first door unit side, The two units are held in the closed position in the first lateral movement path. In this state, the movable stopper of the locking means is moved from the forward limit position to the backward limit position against the urging force by the cam driven roller. It has been moved to the position. Therefore, the movable stopper is in a position that does not interfere with the fixed stopper and is in a state that allows the single door unit in the closed position to open. It can be switched to the open state. Of course, at this time, as the first door unit moves, the second rail unit moves in parallel from the closed position in the first side path to the second side path by the action of the cam rail and the control lever. The opening of a single unit will be allowed.

  Contrary to the above, when the second door alone in the series fully closed state is opened toward the first door alone, the control lever is moved by the action of the cam driven roller and the cam rail of the first door alone. The parallel link is swung in the direction in which the two-door unit is moved parallel to the second lateral movement path side. At this time, the second door unit of the control lever fulcrum shaft (the fulcrum shaft of the inner end side parallel link) The movement amount in the opening direction is equal to the moving distance in the opening direction of the second door alone, but the control lever is swung in the opening direction of the second door alone by the action of the cam driven roller and the cam rail at the tip. Therefore, the amount of movement of the cam follower roller in the cam rail is much larger than the amount of movement of the second door alone in the opening direction. Accordingly, the cam driven roller at the tip of the control lever moves away from the end of the cam rail in a short time from the start of opening of the second door alone, and the movable stopper is allowed to move to the forward limit position by the urging force. That is, the state in which the movable stopper is switched to the forward limit position after a lapse of a short time from the start of opening of the second door unit, and the first door unit can be prevented from opening from the closed position by contact with the fixed stopper, That is, the first door unit is switched to the closed state.

  As is apparent from the above description, according to the sliding door device having the above-described configuration, the second door single unit in the series fully closed state is switched to the second door single unit open state that overlaps the outside of the first door single unit. When it is opened, it can quickly lock the single door unit in the closed position in the series fully closed state, and it can be surely prevented from moving in the opening direction unexpectedly. It can be realized reliably.

  When carrying out the present invention, the cam rail (17) is constituted by a cam groove (37) provided in a main body (35) attached to the first door unit (7), and the movable stopper (40). Projecting from a movable member (38) supported by the main body (35) so as to be able to move back and forth in a horizontal direction perpendicular to the lateral movement direction of the single door, and in the movable member (38), the cam groove A cam groove (38a) that forms a terminal end of (37) and a cam surface (38b) on which the cam driven roller (52b) that enters the cam groove (38a) acts, and the cam groove (38a The cam follower roller (52b) that enters into the inner wall) acts on the cam surface (38b) to move the movable member (38) to the retreat limit position against the biasing force. . This configuration allows the movable stopper to reciprocate between the forward limit position and the reverse limit position in accordance with the forward movement and reverse movement of the cam driven roller between the front end and the end of the cam rail. Reliable execution is possible with a relatively simple configuration.

  The fixed stopper (42) is attached to the guide rail (11) of the laterally movable body (51) supporting the second door unit (8) via parallel links (52, 53), and the first door unit When (7) returns to the closed position in the series closed state, the movable stopper (40) biased and held at the forward limit position is moved against the biasing force on the back surface of the fixed stopper (42). It can be configured to move backward and pass over the fixed stopper (42). According to this configuration, the present invention can be implemented at a low cost with a very simple configuration in which only one member constituting the fixed stopper is attached to the guide rail.

FIG. 1 is a plan view of a fully closed state in which the first door simple substance and the second door simple substance close the opening. FIG. 2 is a cross-sectional plan view showing the lower laterally movable body of the intermediate height of the first door alone in the state shown in FIG. FIG. 3 is a cross-sectional plan view showing a lower laterally movable body on the lower end side of the first second door unit in the state shown in FIG. 1. FIG. 4 is a plan view showing the second door alone open state. FIG. 5 is a cross-sectional plan view showing a lower laterally movable body on the lower end side of the first second door unit alone in a state where the second door unit is opened. FIG. 6 is a plan view showing the first door alone opened state. FIG. 7 is a cross-sectional plan view showing a lower laterally movable body at the lower end side of the first second door unit alone in the first door unit open state. FIG. 8 is a partially longitudinal side view showing the lower laterally movable body of the first door alone in the state shown in FIG. 1. FIG. 9 is a partially longitudinal side view showing the lower laterally movable body of the second door alone in the state shown in FIG. 1. FIG. 10 is a longitudinal left side view of the first door unit outer end position when the second door unit open state shown in FIGS. 4 and 5 is viewed from the outside of the storage space (hereinafter, left and right are specified). The side view is a left side view or a right side view when the single door is viewed from outside the storage space). FIG. 11 is a longitudinal left side view of the first door alone opened state shown in FIGS. 6 and 7. FIG. 12 is a rear view of the first door alone. 13A is a plan view of the first door alone, FIG. 13B is a cross-sectional plan view at an intermediate height of the first door alone, and FIG. 13C is a bottom view of the first door alone. 14A is a right side view of the first door alone, FIG. 14B is a longitudinal sectional view of FIG. 14A, and FIG. 14C is a left side view of the first door alone. FIG. 15 is a rear view of the second unit alone. FIG. 16A is a plan view of the second door unit, FIG. 16B is a plan view of the upper lateral body with parallel links attached to the upper side of the second door body, and FIG. 16C is a rear view of the upper side lateral body. is there. FIG. 17A is a bottom view of the second door unit, FIG. 17B is a bottom view of a lower lateral body with parallel links attached to the lower side of the second door unit, and FIG. 17C is an illustration of the lower side lateral body. FIG. 18A is a right side view of the second door unit, and FIG. 18B is a left side view of the second unit unit. FIG. 19A is a cross-sectional plan view showing the upper cam rail at the upper inner end of the first door alone, and FIG. 19B is a vertical right side view of the main part of FIG. 19A. 20A is a partially omitted plan view showing details of the butted end portions of the first and second doors in series closed state, and FIG. 20B is a partially cross-sectional plan view showing the main part of FIG. 20A. is there. FIG. 21A is a partially omitted plan view showing a state when the second door unit starts to move toward the first unit from the state of being in the series closed state shown in FIG. 20A, and FIG. It is a partial cross-sectional top view which shows a part. FIG. 22A is a partially omitted plan view showing a state when the first door unit starts to move toward the second unit from the state of being in the series closed state shown in FIG. 20A, and FIG. It is a partial cross-sectional top view which shows a part. FIG. 23A is a front view showing a non-locked state of the roller unit before being attached to the first door alone, and FIG. 23B is a front view showing a locked state of the roller unit. FIG. 24A is a partially cross-sectional plan view showing a state in which the parallel link posture switching holding means built in the upper lateral moving body shown in FIGS. 16B and 16C switches the parallel link to the retracted posture, and FIG. 24B shows the parallel link. It is a partial cross-sectional top view which shows the state which the attitude | position switching holding means switched the parallel link to the protrusion attitude | position. FIG. 25A is a plan view showing a driven part on the second door single side of the positioning means for the second door alone, FIG. 25B is a right side view thereof, and FIG. 25C is a rear view thereof. FIG. 26A is a right side view showing the main body on the guide rail side of the positioning means of the second door alone, FIG. 26B is a longitudinal rear view thereof, and FIG. 26C is a plan view thereof. FIG. 27A is a partially cross-sectional plan view showing the positioning means when the second door unit is in the series closed state shown in FIG. 20A, and FIG. 27B is a longitudinal left side view of the same. FIG. 28A is a partially cross-sectional plan view showing the positioning means when the second door unit in the series closed state shown in FIG. 20A starts to move toward the first unit, and FIG. FIG. 29A is a partially cross-sectional plan view showing the positioning means in the first door single unit open state shown in FIG. 6, and FIG. 29B is a longitudinal left side view of the same.

  1 to 11, reference numeral 1 denotes a sliding door device that opens and closes a front opening of the storage space 2. The storage space 2 is formed on the floor plate 3 by left and right vertical side plates 4a and 4b, a top plate 5, an intermediate partition wall plate 6 that divides the storage space 2 into left and right, and a vertical rear side plate (not shown). The sliding door device 1 includes a first door unit 7 and a second door unit 8, and opens and closes the front opening of the storage space 2 by the two door units 7, 8. 3 shows a state in which the doors 7 and 8 are closed in series and the front opening of the storage space 2 is fully closed. In the following description, as shown in FIGS. 1 to 3, when the doors 7, 8 are in a series closed state, the sides of the doors 7, 8 adjacent to each other are referred to as inner ends, and the opposite side The side of is called the outer end.

  As shown in FIGS. 10 and 11, in the front opening of the storage space 2, a first lateral movement path 9 in which the first door unit 7 laterally moves over the entire width of the front opening, and the first lateral movement. A second lateral movement path 10 in which the second door unit 8 laterally moves across the entire width of the front opening is set outside the path 9. The height of the first door unit 7 and the second door unit 8 is such that the lower end is located above the floor plate 3 and the upper end is located higher than the horizontal top plate 5 from the upper surface of the floor plate 3. It is higher than the height up to the top surface. On the upper side of the front side of the top plate 5, an upper second guide rail 11 for supporting and supporting the single unit of the second door is placed and fixed. Below the front end of the upper second guide rail 11, the front end of the top plate 5 is placed. An upper first guide rail 12 for supporting and supporting the single door at a height that covers the surface is integrally provided continuously. On the floor plate 3, the lower guide rail 13 of the upper release groove shape is placed directly below the upper second guide rail 11, and the upper end protruding plate portions on both sides of the groove portion of the guide rail 13 are placed on the floor plate 3. Buried. An intermediate engaged portion 14 is attached to an intermediate height near the lower end of the intermediate partition wall plate 6 so as to protrude forward from its front side. The intermediate engaged portion 14 includes a bracket 14c attached to the front side of the intermediate partition wall plate 6 by a long hole 14a and a fastening bolt 14b so that the height can be adjusted, and an arm portion protruding forward of the bracket 14c. The bearing member 14d is mounted so that its position can be adjusted and fixed in the front-rear depth direction, and the roller 14e is supported on the upper end of the bearing member 14d by a vertical support shaft.

  The upper second guide rail 11 has a groove-shaped cross-sectional structure with a wide lip, and includes a pair of inner and outer groove-shaped rail portions 11a and 11b and a horizontal bottom plate portion 11c that connects and integrates them. The upper first guide rail 12 includes a vertical plate portion 12a that hangs down from a position near the front end of the horizontal bottom plate portion 11c of the upper second guide rail 11, and a horizontal extending plate that is connected to the lower end of the vertical plate portion 12a at a right angle forward. It is comprised by the part 12b and the protrusion rail part 12c protruded by the upper side front end of this horizontal overhang | projection board part 12b. The corner between the horizontal bottom plate portion 11c of the upper second guide rail 11 and the vertical plate portion 12a of the upper first guide rail 12 is arranged such that the vertical plate portion 12a abuts the front end surface of the top plate 5. For example, the horizontal bottom plate portion 11c of the upper second guide rail 11 is attached to the top plate 5 with screws while being fitted and placed on the front end portion of the top plate portion 5.

  The structure of the first door unit 7 will be described with reference to FIGS. 12 to 14. On the back surface side of the rectangular first door unit 7, a pair of left and right roller units 15 </ b> A and 15 </ b> B located near the upper left and right corners, The lower engaged portion 16 located near the lower corner portion directly below the roller unit 15A on the outer end side of the first door unit 7 and the roller unit 15B on the inner end side of the first door unit 7 directly above. The upper cam rail 17 that is flush with the upper end of the first door unit 7, the upper rail 18 that is flush with the upper end of the first door unit 7 from the upper cam rail 17 to the upper side of the roller unit 15 </ b> A, directly below the roller unit 15 </ b> B The lower cam rail 19 located flush with the lower end of the first door single unit 7 near the lower corner of the lower door, and the lower end of the first door single unit 7 between the lower cam rail 19 and the lower engaged portion 16 Lower guide rail that is flush with the lower guide rail 0, and the intermediate guide rail 21 having a length close to the entire width of the first units alone 7 at an intermediate height of the lower end side of the first units alone 7 is disposed. At the inner end portion of the first door unit 7, the surface side is cut out from the inner end side by a certain width over the entire area of the height of the first door unit 7, and a notch step portion 7 a is formed on the surface side. Has been.

  The roller units 15A and 15B have the same structure, and as shown in FIGS. 23A and 23B, the mounting substrate 22, a pair of left and right grooved rollers 23a and 23b are pivotally supported, and the middle of both grooved rollers 23a and 23b. The movable plate 25 is pivotally supported on the mounting substrate 22 at the position by the support shaft 24 so that the seesaw can be moved in the vertical direction, and the lower side of the movable plate 25 has a vertical hole 26 and a fastening bolt 27 in the vertical direction. The lock member 28 is attached so as to be adjustable, the pair of left and right engagement pieces 29a and 29b connected from the lock member 28, and the engagement pieces 29a and 29b when the lock member 28 is raised to the upper limit position. A pair of left and right engaging portions 31a and 31b provided continuously from the mounting substrate 22 so as to engage the check claws 30a and 30b and prevent the lock member 28 from descending. It is al configuration. The pair of left and right engaging pieces 29a and 29b extend downward in an inverted L shape from the left and right sides of the upper end of the lock member 28, and are provided with operating portions 32a and 32b at the lower ends thereof. The pair of left and right locking pieces 29a and 29b are moved toward and away from each other against elasticity so as to narrow 32b, and the check pawls 30a and 30b are separated from the pair of left and right locking portions 31a and 31b inward. By doing so, the lock member 28 can be lowered to the lower limit position. FIG. 23A shows the unlocked state in which the lock member 28 is lowered to the lower limit position, and FIG. 23B shows the lock state in which the lock member 28 is raised to the upper limit position.

  The lower engaged portion 16 is attached to the back surface of the first door unit 7 so that the height thereof can be adjusted by a long hole 33 a and a fastening bolt 33 b, and an L-shaped bearing member 33 in a side view. The roller 34 is supported by a vertical support shaft at the lower end of the tip. As shown in FIG. 14B, by changing the mounting height of the bearing member 33 up and down, the roller 34 is moved to the lower end of the first door unit 7. It is possible to switch between a higher retreat height and a working height that projects downward from the lower end of the first door unit 7.

  As shown in detail in FIGS. 19A and 19B, the upper cam rail 17 has a first door single lock means 36 (hereinafter, abbreviated as a lock means 36) for locking the first door single piece 7 to the closed position on the main body 35. And a curved cam groove 37 having an upper open groove shape, and the main body 35 is composed of a mounting plate portion 35a and a wide main body portion 35b provided on the mounting plate portion 35a. A part and the mounting plate part 35a are embedded in the corner between the back surface and the upper end surface of the first door unit 7. The locking means 36 includes a movable member 38 that is slidably mounted within a predetermined range in the front-rear depth direction at the end of the wide main body 35b on the inner end side of the first door unit 7 and the movable member 38. A compression coil spring 39 urging inward away from the first door unit 7 and a movable stopper 40 protruding below the movable member 38 are provided. The sliding range of the movable member 38 is regulated by a pin 41a projecting upward from the movable member 38 and a long hole 41b provided in the wide body portion 35b so that the pin 41a is loosely fitted. .

  The curved cam groove 37 is engraved on the upper surface of the wide main body portion 35 b, and the open end portion on the outer end side of the first door unit 7 is located slightly away from the back surface of the first door unit 7. In addition, the closed end portion on the inner end side of the first door unit 7 overlaps the movable member 38 and is in a position where it enters the thickness of the first door unit 7 in plan view. Thus, the closed end side of the curved cam groove 37 is halved by the presence of the movable member 38, and the cam groove portion 38a is formed above the movable member 38 so as to compensate for the shortage of the depth. It is engraved. The cam groove 38a coincides with the closed end side of the curved cam groove 37 in a plan view when the movable member 38 retracts to the retreat limit position against the compression coil spring 39. When the movable member 38 advances to the forward limit position by the urging force of the compression coil spring 39, a cam surface 38b is formed that enters the closed end of the curved cam groove 37 in plan view. As shown in FIGS. 20A to 22B, the locking means 36 is an outer groove-shaped rail adjacent to the first door unit 7 among the pair of inner and outer groove-shaped rail portions 11 a and 11 b of the upper second guide rail 11. It cooperates with the fixed stopper 42 attached to the outer upper end corner of the portion 11b. As shown in FIGS. 20A and 20B, when the first door unit 7 is in the closed position, the fixed stopper 42 is slightly more than the right-angled corner portion on the inner end side of the first door unit of the movable stopper 40 in plan view. The fixed stopper 42 is attached so that a right angle corner on the outer end side of the first door unit 7 is located at a position away from the inner end side of the first door unit 7. The movable stopper 40 and the fixed stopper 42 are curved so that the vertical rear surface opposite to the right angle portion is gradually retracted in plan view, and the first door unit 7 is moved backward toward the closed position. When this is done, the movable stopper 40 has a check structure that allows it to pass over the fixed stopper 42.

  As shown in FIG. 13A, the upper rail 18 is a flat rail surface 18 a that is flush with the side on the first door unit 7 side among the both sides on the open end side of the curved cam groove 37 in the upper cam rail 17. Is provided over the entire length. As shown in FIG. 13C, the lower cam rail 19 is not provided with the lock means 36, and the rest has the same structure as the upper cam rail 17. The curved cam groove 19a provided in the lower cam rail 19 has a vertically symmetrical structure with the curved cam groove 37 of the upper cam rail 17, and the lower side flush with the lower end surface of the first door unit 7 is open. The lower guide rail 20 is connected to the open end of the curved cam groove 19a of the lower cam rail 19 and includes a lower open linear rail groove 20a flush with the lower end surface of the first door unit 7. The end of the first door unit 7 on the outer end side enters the bearing member 33 of the lower engaged portion 16, and the end of the linear rail groove 20 a is closed by the bearing member 33. . Similar to the lower guide rail 20, the intermediate guide rail 21 includes a straight rail groove 21 a that is open on the lower side. Both ends of the intermediate guide rail 21 are fixed to the first door unit 7 so as to cover the intermediate guide rail 21. The closed members 21b and 21c are closed.

  As shown in FIG. 15 to FIG. 18, the second door unit 8 has the same height as the first unit unit 7 and has a rectangular shape, and is embedded in the upper and lower ends on the inner end side on the back surface. The parallel link bearing support units 43, 44, the parallel link bearing support units 45, 46 embedded in the upper and lower ends on the outer end side, and attached to the upper end corner adjacent to the parallel link bearing support unit 45, A chamfer formed from a cushioning material such as rubber and attached to a position immediately below the driven portion 48 of the second door single unit positioning means 47 and the parallel link bearing support unit 45 and a position directly above the parallel link bearing support unit 46. Conical contact members 49 and 50 are provided. At the inner end portion of the second door unit 8, when the first second door units 7 and 8 are positioned in the series closed state shown in FIGS. 1 to 3, A thin protruding plate portion 8a that overlaps the notch step portion 7a is formed.

  The upper and lower parallel link bearing support units 43 and 45 on the upper side support the bearings 54 and 55 attached to the lower side of the free ends of the inner and outer parallel links 52 and 53 of the upper lateral movement body 51 shown in FIGS. 16B and 16C. The lower inner and outer parallel link bearing support units 44 and 46 are bearings 59 attached to the upper ends of the free ends of the inner and outer parallel links 57 and 58 of the lower laterally movable body 56 shown in FIGS. 17B and 17C. , 60 is supported. Before the upper second guide rail 11 is mounted on the top plate 5, the upper lateral motion body 51 is fitted in the upper second guide rail 11 from one end of the upper second guide rail 11 so as to be laterally movable. A pair of carts 61a and 61b in the door lateral movement direction, a connecting member 62 for connecting and integrating the two carts 61a and 61b, and a vertical rotation shaft 63a that is rotatably supported by the carts 61a and 61b. One end portion is attached to 63b, and the parallel links 52 and 53 are swingable horizontally.

  As shown in FIGS. 9 to 11, the cart portions 61 a and 61 b are horizontally supported at the four corners in plan view, which are fitted in the groove-shaped rail portions 11 a and 11 b on both sides of the upper second guide rail 11. A support wheel 64 that is rotatable around and a positioning roller 65 that is rotatable around a vertical support shaft are disposed. Here, among the positioning rollers 65 at the four corners, the pair of front positioning rollers 65 close to the second door unit 8 is adjacent to the upper end side of the vertical rail plate of the grooved rail portion 11b and is far from the second door unit 8. The pair of rear-side positioning rollers 65 changes its height so as to be adjacent to the lower end side of the vertical rail plate of the groove-shaped rail portion 11a, and to the front side close to the second door unit 8 acting on the carriage portions 61a and 61b. This makes it easier to receive the falling moment. In addition, the wheels 64 of the carriages 61a and 61b also receive the above-mentioned falling moment, so that the pair of front wheels 64 abut against the lower horizontal rail plate of the grooved rail portion 11b, and the pair of rear wheels 64 are The upper rail of the grooved rail portion 11a abuts from below. Among the inner and outer parallel links 52 and 53 that are pivotally supported on the carriages 61 a and 61 b, the inner end side parallel link 52 has a short control lever 52 a from the base to the parallel link 52 in a plan view. The cam follower roller 52b is pivotally supported by a vertical spindle below the free end of the control lever 52a.

  A bearing 54 of the upper laterally moving body 51 is in the form of a vertically long rectangular thick plate, and a long suspension vertical support shaft 54a is inserted upward from the bearing 54 at one end in the longitudinal direction thereof. The end protruding in the direction is connected to the free end of the parallel link 52. The parallel link bearing support unit 43 that supports the bearing 54 is embedded in the corner between the upper end and the back surface of the inner end portion of the second door unit 8, and the bearing 54 is connected to the second door unit 8. A storage space 43a that can be inserted along the door lateral movement direction from the inner end side of the door, and a notch recessed groove 43b in which the vertical support shaft 54a for suspension between the bearing 54 and the parallel link 52 can move freely. ing. Then, when the bearing 54 is inserted into the storage space 43a to a fixed position where the vertical supporting shaft 54a for suspension reaches the back end of the notch groove 43b, the upper and lower two stages provided in the bearing 54 are used for retaining the bearing 54a. The locking piece 54b prevents the bearing 54 from coming out of the storage space 43a, and the bearing 54 is configured to be fixed in the storage space 43a of the parallel link bearing support unit 43. When the bearing 54 is removed from the parallel link bearing support unit 43, the bearing 54 may be pulled out from the storage space 43a in a state where the retaining locking piece 54b is operated in the unlocking direction against elasticity. .

  The bearing 55 of the upper laterally movable body 51 is in the shape of a vertically long rectangular column, and the end portion of the long vertical support shaft 55a for suspension that is inserted through the center portion upward from below is projected upward from the bearing 55 in parallel. It is connected to the free end of the link 53. The parallel link bearing support unit 45 that supports the bearing 55 is embedded in a corner between the back surface and the upper end surface near the outer end of the second door unit 8. 8 is provided with a storage space 45a that can be fitted from the back surface side to the front surface side, and a notch recessed groove 45b in which the suspension vertical support shaft 55a between the bearing 55 and the parallel link 53 can move freely. ing. When the bearing 55 is fitted in the storage space 45a to a fixed position where the vertical supporting shaft 55a for suspension reaches the back end of the notch groove 45b, a pair of left and right removals provided on the left and right sides of the bearing 55 are provided. The locking piece 55b for stopping and the locking piece 45c provided at the bottom of the storage space 45a prevent the bearing 55 from slipping out of the storage space 45a, and the bearing 55 is used to support the parallel link bearing. The unit 45 is configured to be fixed in the storage space 45a. When removing the bearing 55 from the parallel link bearing support unit 45, the bearing 55 is pulled out from the storage space 45a in a state where the retaining locking pieces 45c and 55b are operated in the unlocking direction against elasticity. It ’s fine.

  As shown in FIG. 24A and FIG. 24B, posture holding means 66 for the parallel links 52, 53 are housed in the carriage parts 61 a, 61 b of the upper laterally movable body 51. FIG. 24A and FIG. 24B show the posture holding means 66 built in the cart portion 61a on the inner end side of the second door unit 8, but the posture holding means 66 built in the cart portion 61b on the outer end side. Since they have the same structure, their illustration and description are omitted.

  The posture holding means 66 includes a cam 67 fixed to a vertical rotation shaft 63a (63b) having a parallel link 52 (53) attached to the upper end, and two protrusions 67a and 67b arranged in parallel in the rotation direction of the cam 67. A first movable body 68 having a tip cam follower 68a corresponding to one projection 67a and slidable in the door lateral movement direction, the first movable body 68 is arranged on the cam 67 side with the tip cam follower 68a. A second movable body 70 having a compression coil spring 69 biased in the moving direction, a tip cam driven portion 70a corresponding to the other protrusion 67b of the cam 67, and slidable in the lateral movement direction, and the second movable body 70 is constituted by a hydraulic damper 71 that urges the distal cam follower 70 a in the direction in which the distal cam follower 70 a moves toward the cam 67. As shown in FIG. 24A, the cam 67 has a retracted posture in which the parallel link 52 (53) retreats in a direction overlapping the carriage unit 61a (61b), and as shown in FIG. 24B, the parallel link 52 (53 ) Is limited to a certain range so that only horizontal swinging between the projecting posture separated from the top of the carriage unit 61a (61b) laterally is possible.

  When the parallel link 52 (53) is in the retracted position shown in FIG. 24A, the tip cam follower 68 a of the first movable body 68 moved forward by the urging force of the compression coil spring 69 is located inside the protrusion 67 a of the cam 67. The parallel link 52 (53) is prevented from swinging from the retracted position to the protruding position, and the parallel link 52 (53) is held in the retracted position. At this time, the protrusion 67 b of the cam 67 presses against the tip cam follower 70 a of the second movable body 70 to hold the second movable body 70 in a position retracted against the urging force of the hydraulic damper 71. Yes. When a rotational force of a certain level or more acts on the parallel link 52 (53) held in the retracted position in the direction away from the top of the carriage unit 61a (61b), as shown in FIG. 24B, the cam 67 The projecting portion 67a causes the first movable body 68 to move backward against the urging force of the compression coil spring 69 via the tip cam driven portion 68a, while the parallel link 52 (53) assumes the protruding posture shown in FIG. 24B. Switch. The projecting posture of the parallel link 52 (53) is that the tip cam driven portion 70a of the second movable body 70 moved forward by the urging force of the hydraulic damper 71 is in pressure contact with the projection 67b of the cam 67, and the compression coil spring. The urging force 69 causes the tip cam follower 68a of the first movable body 68 to press the projection 67a of the cam 67 in the direction of the vertical rotation shaft 63a (63b) that is the rotation axis thereof. Retained. When a rotational force of a certain level or more in the direction of returning to the retracted posture acts on the parallel link 52 (53) held in this protruding posture, the projection 67b of the cam 67 resists the urging force of the hydraulic damper 71 and is second. After the movable body 70 is pushed back, the protrusion 67a of the cam rail 67 is disengaged from the tip cam follower 68a of the first movable body 68, and the first movable body 68 moves forward by the urging force of the compression coil spring 69. Along with this, as a result of giving the cam 67 a rotational force in a direction to return the parallel link 52 (53) to the retracted posture, the parallel link 52 (53) is automatically returned to the retracted posture and held.

  The lower laterally moving body 56 connects a slider 72 for supporting the base portion of the parallel link 57 by the vertical support shaft 57a, a slider 73 for supporting the base portion of the parallel link 58 by the vertical support shaft 58a, and the sliders 72 and 73. The connecting members 74 are integrated, and the free ends of the parallel links 57 and 58 are connected to the lower ends of the vertical support shafts 59a and 60a inserted through the bearings 59 and 60 downward from above. As shown in FIGS. 9 and 11, the sliders 72 and 73 are lower ends of lower half portions 72a and 73a having a width that can be freely slidably fitted in the rail grooves of the lower guide rail 13 embedded in the floor plate 3. In addition, a pair of guide rollers 72b and 73b having a diameter that can be loosely fitted in the rail groove of the lower guide rail 13 are pivotally supported by vertical support shafts and are attached to the upper ends of the lower half portions 72a and 73a. The wide cover portions 72c and 73c located on the upper side of the rail groove of the lower guide rail 13 are placed, and the parallel links 57 and 58 are disposed between the lower half portions 72a and 73a and the cover portions 72c and 73c. Is supported by vertical support shafts 57a and 58a. The connecting member 74 has the same width as the lower half portions 72 a and 73 a of the sliders 72 and 73, and only the lower half portion of the connecting member 74 is in the rail groove of the lower guide rail 13. It is loosely fitted.

  The bearings 59 and 60 that are pivotally supported above the free ends of the pair of parallel links 57 and 58 in the lower laterally movable body 56 are pivotally supported below the free ends of the pair of parallel links 52 and 53 in the upper laterally movable body 51. The parallel link bearing support units 44, 46 that support the bearings 59, 60 have a vertically symmetric structure with the bearings 54, 55, and the parallel link bearing support unit 43 that supports the bearings 54, 55 on the upper lateral moving body 51 side. , 45 and a vertically symmetrical structure. That is, the bearing 59 is in the shape of a vertically long rectangular thick plate, and an end portion of the long vertical support shaft 59a, which is inserted downward in the length direction from the top to the bottom, protrudes downward from the bearing 59. The free end of the parallel link 57 is coupled. The parallel link bearing support unit 44 that supports the bearing 59 is embedded in a corner portion between the lower end and the back surface of the inner end portion of the second door unit 8, and the bearing 59 is connected to the second door unit 8. A housing space 44a that can be inserted from the inner end side along the door lateral movement direction, and a notch recessed groove 44b in which a vertical support shaft 59a between the bearing 59 and the parallel link 57 can move freely. When the bearing 59 is inserted into the storage space 44a up to a fixed position where the vertical support shaft 59a reaches the back end of the notched recess groove 44b, the upper and lower two-stage retaining locking pieces provided on the bearing 59 are provided. 59b is configured to prevent the bearing 59 from slipping out of the storage space 44a, and the bearing 59 is fixed in the storage space 44a of the parallel link bearing support unit 44. When the bearing 59 is removed from the parallel link bearing support unit 44, the bearing 59 may be pulled out from the storage space 44a in a state where the retaining locking piece 59b is operated in the unlocking direction against elasticity. .

  The bearing 60 of the lower laterally movable body 56 has a vertically long rectangular column shape, and an end portion of the long vertical support shaft 60a inserted through the center portion thereof downward from the top and projecting downward from the bearing 60 is a parallel link 58. It is connected to the free end of. The parallel link bearing support unit 46 that supports the bearing 60 is embedded in a corner between the back surface and the lower end surface near the outer end of the second door unit 8. 8 is provided with a storage space 46a that can be fitted from the rear surface side toward the front surface side, and a notch recessed groove 46b in which the vertical support shaft 60a between the bearing 60 and the parallel link 58 can move freely. When the bearing 60 is fitted in the storage space 46a to a fixed position where the vertical support shaft 60a reaches the back end of the notch groove 46b, a pair of left and right retaining members provided on the left and right sides of the bearing 60 is provided. The stop piece 60b and the retaining stopper 46c provided at the bottom of the storage space 46a prevent the bearing 60 from slipping out of the storage space 46a, and the bearing 60 is connected to the parallel link bearing support unit 46. It is configured to be fixed in the storage space 46a. When removing the bearing 60 from the parallel link bearing support unit 46, the bearing 60 is pulled out from the storage space 46a with the retaining locking pieces 46c and 60b being operated in the unlocking direction against elasticity. It ’s fine.

  As described above, when the upper lateral body 51 and the lower lateral body 56 are attached to the upper and lower sides of the second door unit 8, both end fulcrums (63a) of the pair of parallel links 52 and 53 in the lateral direction of the upper lateral body 51 are provided. , 54a) (63b, 55a) and both fulcrums (57a, 59a) (58a, 60a) of the pair of parallel links 57, 58 in the door lateral movement direction in the lower lateral movement body 56 are always on the same vertical axis. As with the parallel link 52 in the upper side lateral motion body 51, the control lever 57b is integrally connected to the parallel link 57 in the lower lateral motion body 56, and is pivotally supported on the upper end of the control lever 57b. The cam driven roller 57c is also configured to be always located on the same vertical axis as the cam driven roller 52b pivotally supported on the lower side of the tip of the control lever 52a of the parallel link 52. That.

  As shown in FIGS. 16A, 18A, and 25A to 25C, the driven portion 48 of the second door single unit positioning means 47 includes a mounting plate portion 75a on the back surface of the second door single unit 8 and the mounting plate portion 75a. The main body 75 provided with a horizontal plate portion 75b that produces a right angle horizontally from the upper end of the inner side of the door, and the outer end of the second door unit 8 among the corners in the door lateral movement direction at the tip of the horizontal plate portion 75b A guide roller 76 pivotally supported by a vertical support shaft on the lower corner of the side, and a horizontal plate portion 75b so as to be adjacent to the inner end side of the second door unit 8 with respect to the guide roller 76. It is comprised from the vertical-shaft body 77 standingly arranged on the front-end | tip part. The guide roller 76 is arranged so that the peripheral surface of the guide roller 76 protrudes from the right side of the corner of the horizontal plate portion 75b in plan view. In order to configure the second door single unit positioning means 47 together with the driven portion 48, as shown in FIG. 1, one end of the upper second guide rail 11, that is, the first door single unit 7 and the second door single unit 8 are connected in series. The control part 78 is provided above the edge part on the outer end side of the second door unit 8 when in the closed state.

  As shown in FIGS. 26A to 29C, the control unit 78 includes a main body 80 disposed on the upper side of the end portion of the upper second guide rail 11 via a mounting bracket 79. The mounting bracket 79 is mounted on the inner side of the groove-shaped rail portion 11b on the front side of the upper second guide rail 11 by a mounting plate 79a and a fastening bolt 79b, and is folded from the mounting plate portion 79c. A vertical plate portion 79d that is arranged in a curved line and is disposed so as to close the end portion of the upper second guide rail 11 is provided. The main body 80 is attached to the vertical plate portion 79d of the mounting bracket 79 by a fastening bolt 79e and supported by a groove-shaped rail portion 11b on the front side of the upper second guide rail 11, and an upper second guide. A rear side wall 82 having a protruding ridge portion 82a supported on the groove-shaped rail portion 11a on the rear side of the rail 11, and a ceiling wall portion 83, a lateral side wall portion 81, a rear side wall portion 82, And the recessed space 84 which three sides were closed by the ceiling wall part 83 is formed. The ceiling wall 83 is formed with a groove 85 that is long in the direction orthogonal to the door lateral movement direction at a position close to the free side opposite to the side where the side wall 81 is located. The concave groove portion 85 is closed at both ends in the length direction and opened to the lower side of the ceiling wall portion 83. On the side surface of the concave groove portion 85 opposite to the side where the lateral side wall portion 81 is present, A horizontal opening 85a is formed over an area from the end of the concave groove portion 85 on the rear wall portion 82 side to about half of the entire length of the concave groove portion 85.

  The assembly method, usage method, and operation of the sliding door device 1 according to the present invention configured as described above will be described. As described above, the upper side of the second door unit 8 shown in FIGS. 16B and 16C. The laterally movable body 51 is laterally moved to the upper second guide rail 11 by fitting the pair of carriage parts 61a and 61b and the connecting member 62 to the upper second guide rail 11 before being mounted on the top plate 5. Thereafter, the upper second guide rail 11 and the upper first guide rail 12 integrally connected to the upper second guide rail 11 are attached to a predetermined position of the top plate 5. On the other hand, by fitting the lower side moving body 56 of the second door unit 8 shown in FIGS. 17B and 17C to the lower guide rail 13 embedded in the floor plate 3, the sliders 72 and 73 and the connecting member 74 are fitted. It is set on the lower guide rail 13 so as to be laterally movable. In this state, the bearings that are suspended from the parallel link bearing support units 43 and 45 at both the inner and outer ends of the second door unit 8 are below the ends of the parallel links 52 and 53 at the inner and outer ends of the upper lateral body 51. 54 and 55 are fitted and locked as described above. Also, the bearings 59, 60 supported on the upper ends of the parallel links 57, 58 of the lower laterally movable body 56 are attached to the parallel link bearing support units 44, 46 at the lower and inner ends of the second door unit 8, respectively. Fit and lock as described above.

  By the above operation, the second door unit 8 is supported in a vertical posture by the pair of inner and outer parallel links 52 and 53 of the upper lateral body 51 and the pair of inner and outer parallel links 57 and 58 of the lower lateral body 56. It can move laterally along the upper second guide rail 11 and the lower guide rail 13. Further, with the parallel horizontal swing of the parallel links 52 and 53 and the parallel links 57 and 58, the second door unit 8 can be translated in the front-rear depth direction perpendicular to the door lateral movement direction. The pair of inner and outer parallel links 52 and 53 of the upper lateral body 51 are horizontally swung only between the retracted position and the projecting position by the action of the posture holding means 66 incorporated in the cart portions 61a and 61b of the upper lateral body 51. The pair of inner and outer parallel links 52, 53 that are movable are held by elastic force alternatively between the retracted posture and the protruding posture. Here, when each parallel link 52, 53, 57, 58 is held in the retracted posture, the second door unit 8 is positioned in the first lateral movement path 9 on the rear side, and each parallel link 52, 53, When the 57 and 58 are held in the protruding posture, the second door unit 8 is configured to be positioned in the second lateral movement path 10 on the front side. Next, the operation of setting the first single door 7 is started. At this time, the second single door 8 is operated so as to be pulled out to the front, and is positioned in the second lateral movement path 10 on the front side.

  When the first door unit 7 is set in the first lateral movement path 9, the roller 14e of the intermediate engaged portion 14 attached to the intermediate partition wall plate 6 is loosened, the fastening bolt 14b is loosened, and the bracket 14c is lowered. By doing so, it is lowered below the intermediate guide rail 21 of the first door unit 7. Then, as shown in FIGS. 12 and 23A, the fastening bolts 27 of the roller units 15A and 15B are loosened to lower the lock member 28 to the lower limit height, and the upper end of the lock member 28 and the lower end height of the grooved rollers 23a and 23b. 14C, and the roller 34 of the lower engaged portion 16 is raised to a retracted height above the lower end of the first door unit 7 as shown in phantom lines in FIG. 14C. Then, the grooved rollers 23a and 23b of the roller units 15A and 15B are fitted into the ridge rail portion 12c of the upper first guide rail 12 from above in a state of being fixed by the fastening bolts 33b. Thereafter, the fastening bolt 33b of the lower engaged portion 16 of the first door unit 7 entering the upper side of the floor board 3 is loosened, and the roller 34 is lowered to the working height as shown in FIG. 14, and shown in FIG. In this manner, the bearing member 33 is fixed by the fastening bolt 33b in a state where the roller 34 is loosely fitted in the lower guide rail 13 on the floor plate 3 side.

  Next, as shown in FIGS. 8 and 23B, the lock member 28 of the roller units 15A and 15B is raised to the upper limit height and fixed by the fastening bolt 27, whereby the upper end of the lock member 28 is moved to the upper first guide. It is made to approach the lower side of the horizontal overhanging plate part 12b of the rail 12. As a result, in order to lift the grooved rollers 23a and 23b of the roller units 15A and 15B from the protruding rail portion 12c of the upper first guide rail 12 and pull them forward, the first door unit 7 is lifted and locked. The upper end of the member 28 comes into contact with the lower side of the horizontal overhanging plate portion 12b of the upper first guide rail 12 and is blocked. Finally, the bracket 14c is lifted at the intermediate engaged portion 14 of the intermediate partition wall plate 6 and the bearing member 14d is adjusted in the front-rear depth direction, and the roller 14e is moved to the intermediate guide rail 21 of the first door unit 7 by itself. The bracket 14c is fixed to the intermediate partition wall plate 6 by the fastening bolts 14b and the bearing member 14d is fixed to the bracket 14c while being loosely fitted in the straight rail groove 21a so as to be able to move smoothly. When removing the first door unit 7, the work may be performed in the reverse order of the above work.

  The first door unit 7 set in the first lateral movement path 9 as described above can be laterally moved horizontally to the upper first guide rail 12 via the pair of roller units 15A and 15B in the lateral direction of the door. In addition to being suspended, the vertical posture of the roller 34 of the lower engaged portion 16 with respect to the lower guide rail 13 and the intermediate guide rail with respect to the roller 14e of the intermediate engaged portion 14 of the intermediate partition wall 6 The inside of the first lateral movement path 9 can be smoothly laterally moved while being held by the loose fitting 21.

  The setting of the first door unit 7 is as described above from the inner end of the second door unit 8 positioned in the second lateral movement path 10 (the end portion with the thin protruding plate portion 8a) side. This is performed at a position where the inner end of the first door unit 7 (the end portion with the recessed step 7 a) enters the inside of the second door unit 8. Therefore, the cam driven roller 52b of the control levers 52a and 57b connected from the pair of upper and lower parallel links 52 and 57 in the projecting posture on the inner end side of the second door unit 8 positioned in the second lateral movement path 10. , 57c are located at a position slightly away from the back surface of the first door unit 7 located in the first lateral movement path 9, so that the cam driven roller 52b of the upper control lever 52a of the second door unit 8 The rail surface 18a of the upper rail 18 of the first door unit 7 is adjacent to the cam driven roller 57c of the lower control lever 57b of the second door unit 8, and the lower guide rail 20 of the first door unit 7 is The first door unit 7 is arranged in the first lateral movement path 9 so that the straight rail groove 20a is fitted from above.

  When the first door unit 7 and the second door unit 8 are set as described above, the inner end portion of the first door unit 7 is positioned on the front side of the intermediate partition wall plate 6 as shown in FIGS. Thus, the 1st door simple substance 7 is laterally moved to the one end side of the 1st lateral movement path | route 9, and this 1st door simple substance 7 is a half area | region of the storage space 2 between the vertical side board 4a and the intermediate partition wall board 6. Is moved to the closed position. In this state, the first door single unit 7 suspended from the upper first guide rail 12 by the roller units 15A and 15B has the intermediate engaged portion 14 on the intermediate partition wall plate 6 side as shown in FIG. The roller 14e is fitted to the inner end side end portion of the intermediate guide rail 21 attached to the first door unit 7, and at the lower end side of the first door unit 7, as shown in FIG. Since the roller 34 of the lower engaged portion 16 on the side is fitted to the end of the lower guide rail 13 on the floor plate 3 side, the vertical posture of the first door unit 7 is reliably maintained.

  Next, the inner end of the second door unit 8 positioned in the second lateral movement path 10 with the inner end side covering the outer side of the first door unit 7 is positioned on the front side of the intermediate partition wall plate 6. Thus, when it is laterally moved in the second lateral movement path 10 in the opposite direction to the first door single body 7, the cam driven roller 52 b of the control lever 52 a of the upper lateral movement body 51 is in the upper rail 18 of the first door single body 7. While rolling on the rail surface 18a, the cam driven roller 57c of the control lever 57b of the lower laterally moving body 56 moves in the linear rail groove 20a in the lower guide rail 20 of the first door unit 7, thereby Since each of the parallel links 52, 53, 57, 58 holding the posture of the door unit 8 cannot change from the projecting posture to the retracted posture, the second door unit 8 is located outside the first door unit 7. To move linearly in the second lateral movement path 10 It made. When the second door unit 8 approaches the closed position shown in FIGS. 1 to 3, that is, the closed position that closes the half region of the storage space 2 between the vertical side plate 4 b and the intermediate partition wall plate 6, the upper side The cam driven roller 52b of the control lever 52a of the lateral moving body 51 enters the curved cam groove 37 in the upper cam rail 17 from the rail surface 18a in the upper rail 18 of the first door unit 7 and controls the lower lateral moving body 56. The cam follower roller 57c of the lever 57b enters the curved cam groove 19a of the lower cam rail 19 from the straight rail groove 20a of the lower guide rail 20 of the first door unit 7.

  Due to the above action, the second door unit 8 that laterally moves in the second lateral movement path 10 toward the closed position has the control levers 52 a and 57 b in the curved cam grooves 37 and 19 a of the upper cam rail 17 and the lower cam rail 19. As the cam driven rollers 52b and 57c enter, the parallel link 52 of the upper lateral motion body 51 and the parallel link 57 of the lower lateral motion body 56 swing from the projecting posture toward the retracted posture, respectively. The door unit 8 moves in parallel from the second lateral movement path 10 into the first lateral movement path 9. As shown in FIGS. 1 and 3, when the cam driven rollers 52 b and 57 c reach the end of the curved cam grooves 37 and 19 a, the second door unit 8 is positioned at the closed position in the first lateral movement path 9. The closed position in the first lateral movement path 9 in a state of being in series with the first single door unit 7 is reached. At this time, as shown in the drawing, the thin protruding plate portion 8a at the inner end of the second door unit 8 overlaps the recessed step 7a at the inner end of the first door unit 7, and the surfaces of the both door units 7, 8 are surfaces. It becomes one state. The second door unit 8 which has moved in parallel into the first lateral movement path 9 and changed to the closed position in series with the first door unit 7 has the parallel links 52 and 53 of the upper side moving body 51 thereof connected to the carriage unit 61a. As a result of being held in the retracted posture by the action of the posture holding means 66 built in 61b, it is reliably held in the series closed state shown in FIGS.

  When the first door unit 7 and the second door unit 8 are closed in series in the first lateral movement path 9 as described above, and the opening of the storage space 2 is fully closed, as shown in FIG. The cam driven roller 52b of the control lever 52a on the inner end side of the upper side moving body 51 of the second door unit 8 is in the locking means 36 at the end of the curved cam groove 37 in the upper cam rail 17 of the inner side of the first door unit 7. I'm stuck in. That is, as shown in FIGS. 19A and 19B, the movable member 38 of the locking means 36 is held at the forward limit position displaced from the first door unit 7 to the back side by the urging force of the compression coil spring 39, and the curved cam The cam driven roller 52b entering the cam groove portion 38a of the movable member 38 from the groove 37 opposes the movable member 38 against the biasing force of the compression coil spring 39 via the cam surface 38b on the side surface of the cam groove portion 38a. Accordingly, the movable stopper 40 formed on the lower side of the movable member 38 is switched to the unlocked state shown in FIGS. 20A and 20B. In this unlocked state, the movable stopper 40 of the first door unit 7 in the closed position is located slightly away from the fixed stopper 42 provided on the upper second guide rail 11, temporarily. Even when the first door simple substance 7 in the closed position moves to the side where the second door simple substance 8 is located, the movable stopper 40 can pass over the surface without colliding with the fixed stopper 42. .

  On the other hand, when the second door single unit 8 reaches the closed position in series with the first door single unit 7 in the first lateral movement path 9, as shown in FIG. 27A and FIG. The guide roller 76 and the vertical shaft body 77 in the driven portion 48 on the second door unit 8 side enter the recessed space 84 (see FIG. 28A) in the control portion 78 on the upper second guide rail 11 side, and the guide roller 76 is The second door unit 8 is stopped at a fixed position by contacting the inner side surface of the lateral side wall 81 of the main body 80. The vertical shaft body 77 enters the opening 85 a in the recessed groove 85 on the upper side of the recessed space 84.

  As described above, the first door unit 7 and the second door unit 8 are arranged in series in the first lateral movement path 9, and the opening of the storage space 2 is fully closed. When opened toward the single unit 7, the cam driven roller 52 b of the control lever 52 a in the upper lateral body 51 of the second single unit 8 is in the closed position as shown in FIGS. 21A and 21B. As the upper cam rail 17 shifts from the cam groove portion 38a of the movable member 38 of the locking means 36 to the curved cam groove 37, the parallel link 52 moves from the protruding posture to the retracted posture via the control lever 52a. And start swinging. At the same time, the cam driven roller 57c of the control lever 57b in the lower laterally movable body 56 of the second door unit 8 also moves in the curved cam groove 19a in the lower cam rail 19 of the first door unit 7 in the closed position. Thus, the parallel link 57 also starts to swing from the protruding posture toward the retracted posture via the control lever 57b. The swinging motion of the parallel link 52 of the upper lateral motion body 51 and the parallel link 57 of the lower lateral motion body 56 to the protruding posture at this time is synchronized with each other. As a result, the parallel links 52, 53 of the upper lateral body 51 and the parallel links 57, 58 of the lower lateral body 56 change from the retracted position to the projecting position in synchronization with each other, while As shown in FIG. 21A, the second door unit 8 is moved laterally along the side guide rails 13, and the thin protruding plate portion 8 a at the inner end thereof is a recessed step at the inner end of the first door unit 7. From the first lateral movement path 9 to the second lateral movement path 10, the translation is carried out diagonally forward so as to rise obliquely forward from the portion 7 a.

  The second door unit 8 opens in the second lateral movement path 10 by moving from the first lateral movement path 9 to the second lateral movement path 10 while moving obliquely forward, and the second door unit 8 reaches the second lateral movement path 10. However, as shown in FIG. 21A, the cam driven roller 52b of the control lever 52a on the second door unit 8 side is bent from the cam surface 38b of the cam groove 38a of the locking means 36 on the first door unit 7 side. As it moves into the groove 37, the movable member 38 of the locking means 36 moves to the forward limit position by the urging force of the compression coil spring 39. As a result, as shown in FIG. 21B, the movable stopper 40 of the movable member 38 is switched to the projecting action position approaching the upper second guide rail 11, and the movable stopper 40 on the opening direction side of the first door unit 7 is switched. The right angle portion overlaps with the right angle portion of the fixed stopper 42 on the upper second guide rail 11 side in the door lateral movement direction. Accordingly, the first door unit 7 in the closed position is opened from the closed position toward the first lateral movement path 9 which has become empty due to the movement of the second door unit 8 into the second lateral movement path 10. Even so, the movable stopper 40 on the first single door 7 side comes into contact with the fixed stopper 42 on the upper second guide rail 11 side and is prevented from opening.

  The second door single unit positioning means 47 in the state shown in FIG. 27A and FIG. 27B by the opening movement accompanied by the parallel movement of the second door single unit 8 obliquely forward, as shown in FIG. 28A and FIG. The guide roller 76 and the vertical shaft body 77 of the driven portion 48 on the side of the single unit 8 are withdrawn obliquely forward from the inside of the recessed space 84 of the control unit 78 on the side of the upper second guide rail 11, and Does not obstruct the opening of 8. At this time, the vertical shaft body 77 does not enter the groove 85 of the controller 78, and can exit from the wide opening 85a of the groove 85 without any problem. As shown in FIGS. 4 and 5, the second door unit 8 moves laterally in the second lateral movement path 10 and reaches the open limit position overlapping the outside of the first door unit 7 in the closed position. A half region of the storage space 2 closed by the second door unit 8, that is, a region between the vertical side plate 4 b and the intermediate partition wall plate 6 is opened, and the second door unit 8 is opened.

  When the second door unit 8 is opened outside the first door unit 7 as described above, the cam driven roller 52b of the control lever 52a on the inner end upper side of the second door unit 8 is While rolling along the rail surface 18a of the upper rail 18, the end of the upper rail 18 is reached on the outer end side, and the cam driven roller 57c of the control lever 57b on the lower inner end of the second door unit 8 is reached. Will reach the end of the linear rail groove 20a on the outer end side while rolling in the linear rail groove 20a of the lower guide rail 20 of the first door unit 7. Therefore, even if an unreasonable force is applied from the outside to the side where the first door unit 7 is located on the second door unit 8 that is in the middle of opening or has reached the opening limit position, the second door unit 8 is held in a vertical posture. The movement of the control levers 52a, 57b to the outside of the cam driven rollers 52b, 57c is caused by the movement of the parallel links 52, 53, 57, 58 in the protruding posture to the retracted posture. Since the 7 upper rail 18 and the lower guide rail 20 block, the second door unit 8 does not fall to the side where the first door unit 7 is located.

  As described above, after the second single door 8 starts to move from the closed position, the first single door 7 in the closed position opens from the closed position as shown in FIG. 21B. Since it is blocked by the movable stopper 40 in the lock means 36 on the door unit 7 side and the fixed stopper 42 on the upper second guide rail 11 side, as shown in FIGS. 7 and the second door unit 8 at the open limit position outside thereof cannot be moved together in the direction in which the second door unit 8 is closed. Therefore, from the state shown in FIGS. 4 and 5, only the second door unit 8 at the open limit position can be closed. The movement at this time is exactly the reverse of the movement of the second door unit 8 in the closed position, and the second door unit 8 moves laterally in the second lateral movement path 10 and then moves to the first position. The upper and lower cam rails 17 and 19 of the door unit 7 and the upper and lower both control levers 52a and 57b on the second door unit 8 side into which the cam driven rollers 52b and 57c are fitted are connected to the first from the second lateral movement path 10. It enters into the lateral movement path 9 while moving obliquely in parallel and returns to the closed position, and as shown in FIGS. 1 to 3, the first door unit 7 and the second door unit 8 are in a fully closed state. Become.

  From the fully closed state shown in FIGS. 1 to 3, the half of the storage space 2 closed by the first door unit 7, that is, between the vertical side plate 4 a and the intermediate partition wall plate 6, contrary to the above. When the area is opened, the first door 7 in the closed position is moved to the side where the second door 8 is located. In this case, as shown in FIGS. 20A and 20B, the first door 7 side The movable stopper 40 in the lock means 36 is in a state where it can move through the front side of the fixed stopper 42 without contacting the fixed stopper 42 on the upper second guide rail 11 side. 7 can be opened without problems. Since the opening operation of the first door unit 7 at this time is relatively the same as when the second door unit 8 described above is opened, as shown in FIGS. 22A and 22B, The curved cam grooves 37 and 19a of the upper and lower cam rails 17 and 19 on the 7 side are connected to the parallel links 52 and 57 via the cam driven rollers 52b and 57c of the upper and lower control levers 52a and 57b on the inner end side of the second door unit 8, respectively. The first door unit 7 is opened while swinging from the retracted position to the protruding position. Accordingly, as the first door unit 7 opens, the second door unit 8 translates from the closed position to the outside, allowing the first door unit 7 to move laterally. The cam driven roller 52b of the upper control lever 52 of the second door unit 8 moves from the cam groove portion 38a of the movable member 38 in the locking means 36 of the first door unit 7 to the curved cam groove 37 of the upper cam rail 17. Accordingly, the movable stopper 40 of the movable member 38 moves forward as described above. At this time, the movable stopper 40 has already moved to the fixed stopper 42 on the upper second guide rail 11 side. Since it has moved to the front side, it slides on the surface of the fixed stopper 42 and passes.

  The second door unit 8 at the time of the above operation is translated into the second lateral movement path 10 on the front side by the parallel links 52, 53, 57, 58 while receiving a pressing force in the opening direction of the first unit 7. Therefore, as shown in FIGS. 29A and 29B, the guide roller 76 in the driven portion 48 on the second door single unit 8 side of the second door single unit positioning means 47 is in the control unit 78 on the upper second guide rail 11 side. The second door unit 8 rolls while being pressed against the inner side surface of the lateral side wall portion 81 of the main body 80 to linearly translate from the closed position to the front side. At this time, the vertical shaft body 77 in the driven portion 48 on the second door unit 8 side linearly enters toward the back end portion of the recessed groove portion 85 in the control portion 78 on the upper second guide rail 11 side. The second door unit 8 does not escape from the opening 85a unlike when the second door unit 8 is opened. As described above, the second door unit 8 linearly translates from the first lateral movement path 9 into the second lateral movement path 10 as the first door single unit 7 starts to move. The first door unit 7 enters and moves inside the unit 8, and finally, as shown in FIGS. 6 and 7, a pair of upper and lower contacts on the outer end side of the second door unit 8 in the second lateral movement path 10. The contact members 49 and 50 are fitted in the recessed step 7a at the inner end of the first door unit 7 to stop the opening of the first door unit 7.

  With the above operation, as shown in FIGS. 6 and 7, the first door unit 7 enters the trace of the closed position of the second door unit 8 in the fully closed state, and the first door unit 7 is moved to the outside of the first door unit 7. The two single doors 8 are overlapped and the first single door 7 is switched to the open state, and a half region between the vertical space plate 4b and the intermediate partition wall plate 6 of the storage space 2 is opened. In the open state of the first door unit 7 shown in FIGS. 6 and 7, the first door unit 7 in a state of being suspended from the upper first guide rail 12 by the pair of roller units 15A and 15B is shown in FIG. The roller 14e in the intermediate engaged portion 14 on the intermediate partition wall plate 6 side is fitted to the outer end portion of the intermediate guide rail 21 shown, and the lower engaged portion 16 on the lower end on the outer end side of the first door unit 7 is fitted. Since the roller 34 is fitted to the lower guide rail 13, the lower end side of the first door unit 7 is positioned in the direction with respect to the front and rear only at the position on the outer end side, and the inner end side is positioned. There is no means. However, when the first door unit 7 is in the open state, the pair of parallel links 52 and 53 of the upper lateral moving body 51 and the pair of parallel links 57 and 58 of the lower lateral moving body 56 are held in the vertical posture on the outside. Since the second single door 8 is covered, the inner first single door 7 is hardly subjected to a pressing force from the outside to the inside, so it can be said that there is almost no fear that the first single door 7 will fall inside. .

  In the open state of the first door unit 7 shown in FIGS. 6 and 7, as shown in FIGS. 29A and 29B, the vertical shaft body 77 in the driven portion 48 on the second door unit 8 side of the second door unit positioning means 47. However, since it has entered the back end of the concave groove 85 in the control unit 78 on the upper second guide rail 11 side, the outer second door unit 8 cannot be laterally moved to the opposite side. Therefore, by pulling out the first door unit 7 and laterally moving it to the original closed position, the original fully closed state is restored. The operation at this time is only reverse to the operation when the first door unit 7 is opened from the fully closed state to the open state of the first door unit 7, and the first door unit 7 is brought into the closed position. From just before reaching, the second door unit 8 linearly translates from the second side path 10 into the first side path 9, and the first unit 7 and the second unit 8 move to the first side path. 9 to switch to the serial state.

  When the first door unit 7 is in the open state, the movable member 38 of the lock means 36 provided in the upper cam rail 17 of the first door unit 7 is in the forward limit position, and the movable stopper 40 is the upper second guide rail. It is in the state which approached 11 side. Therefore, at the final stage when the first door unit 7 is returned to the original closed position, the movable stopper 40 in the state of approaching the upper second guide rail 11 side is fixed to the fixed stopper 42 on the upper second guide rail 11 side. As described above, the movable stopper 40 and the fixed stopper 42 are engaged with each other only when the first door unit 7 is opened from the closed position. When laterally moving in the opposite direction and returning to the closed position, the movable member 38 having the movable stopper 40 moves backward against the urging force of the compression coil spring 39, and the movable stopper 40 passes through the fixed stopper 42. Because of the non-return structure that can be used, the first door unit 7 can move sideways to the original closed position without any problem. When the first door unit 7 reaches the original closed position, the movable member 38 returns to the forward limit position by the urging force of the compression coil spring 39, and the movable stopper 40 attempts to engage with the fixed stopper 42. At the same time, the second door unit 8 linearly translates from the second side path 10 into the first side path 9 and returns to the original closed position. The cam driven roller 52b of the end control lever 52a returns the movable member 38 (movable stopper 40) in the lock means 36 on the first door unit 7 side to the retreat limit position to lock the lock means 36 as described above. It will be switched to the release state.

  The sliding door device according to the present invention is configured such that an arbitrary one of the two door units is laterally moved so as to overlap the other door unit from a state in which the opening of the storage space is closed by the two door units. The left and right halves of the opening can be opened, and when the opening is closed with two single doors, the two single doors are placed in series on a straight line, It can be used as a sliding door device that can be used.

DESCRIPTION OF SYMBOLS 1 Sliding door apparatus 2 Storage space 3 Floor board 5 Top plate 6 Intermediate partition wall board 7 1st door simple substance 7a Notch step part 8 2nd door simple substance 8a Thin protrusion board part 9 1st lateral movement path 10 2nd lateral movement path 11 Upper second guide rail 11a, 11b Groove-shaped rail portion 12 Upper first guide rail 13 Lower guide rail 12a Vertical plate portion 12b Horizontal projecting plate portion 12c Projection rail portion 14 Intermediate engaged portion 14a, 26, 33a, 41b Long hole 14b, 27, 33b, 79b, 79e Fastening bolt 14c Bracket 14e Roller 15A, 15B Roller unit 16 Lower engaged portion 17 Upper cam rail 18 Upper rail 18a Rail surface 19 Lower cam rail 19a, 37 Curved cam groove 20 Lower Side guide rail 20a, 21a Straight rail groove 21 Intermediate guide rail 23a, 23b With groove Roller 24 Support shaft 25 Movable plate 28 Lock member 29a, 29b Locking piece 30a, 30b Non-return claw 31a, 31b Locking part 32a, 32b Operation part 33 Bearing member 34 Roller 36 Locking means 37 Curved cam groove 38 Moving member 38a Cam groove portion 38b Cam surface 39, 69 Compression coil spring 40 Movable stopper 41a Pin 42 Fixed stopper 43, 44 Parallel link bearing support unit 43a, 44a, 45a, 46a Storage space 43b, 44b, 45b, 46b Notch recessed groove 45, 46 parallel link bearing support unit 47 second door single unit positioning means 48 driven portion 49, 50 abutting member 51 upper lateral moving body 52, 53, 57, 58 parallel link 52a, 57b control lever 52b, 57c cam driven roller 54, 55 , 59,60 Bearing 5 4a, 55a Vertical support shaft for suspension 56 Lower laterally movable body 61a. 61b Carriage part 62, 74 Connecting member 63a, 63b Vertical rotation shaft 64 Support wheel 65 Positioning roller 66 Posture holding means 67 Cam 68 First movable body 70 Second movable body 71 Hydraulic damper 72, 73 Slider 72b, 73b, 76 Guide roller 77 Vertical shaft body 78 Control unit 79 Mounting bracket 80 Body 84 Recessed space 85 Recessed groove 85a Opening

As a sliding door device of this type, as described in Patent Document 1, a first single door unit that can move laterally in the entire first lateral movement path and a lateral movement in parallel with the first lateral movement path. It is supported by a laterally supported laterally movable body via a pair of parallel links in the lateral direction, and can be translated back and forth between a first lateral movement path on the inside and a second lateral movement path on the outside. the traverses the path includes a horizontally moved freely second units alone over its entire area, the first units alone and the second units alone are series closed state series first traverses the path, the second units alone The first door single unit opened state where the first door unit is overlapped inside the second lateral movement path and the second door unit moved in parallel within the second lateral path are closed in series. It is configured to be able to be switched to a single open state of the second door overlapped on the outside of the first single door at the pair of parallel movement directions. A control lever with a cam driven roller at the tip is connected to the inner end side parallel link close to the first door unit in the closed state in series. A cam rail is provided that acts on the cam follower roller to translate the second door unit from the second lateral path into the first lateral path when the state or the second door unit is opened in series. Sliding door devices are known.

In the sliding door device described in Patent Document 1, when the second door unit is opened in order to switch to the second door unit open state among the first and second door units in the series closed state , When the two-door unit is translated from the first lateral path to the second lateral path by the action of the cam rail and the cam follower roller, the first door unit cannot be held in the closed position. Therefore, there was a problem that the first door unit moved in the opening direction from the closed position. In order to solve this problem, the applicant has proposed a locking means for locking the first door unit in the closed position in conjunction with the opening of the second unit. However, since the second door alone does not work unless it is opened by a certain distance, the first door alone may unexpectedly move in the opening direction from the closed position.

The present invention proposes a sliding door device that can solve the above-mentioned conventional problems, and the sliding door device according to the present invention understands the relationship with embodiments described later. For the sake of simplicity, when the reference numerals used in the description of the embodiment are shown in parentheses, the first door unit (7 ) And a laterally movable body (51) supported so as to be laterally movable in parallel with the first lateral movement path (9) through a pair of parallel links (52, 53) in the lateral movement direction, A single second door that can be translated back and forth between the lateral movement path (9) and the outer second lateral movement path (10) and can move laterally throughout the second lateral movement path (10). with 8), the first units alone and (7) the second units alone (8), the series from the closed state, the second units alone (8) a second in series with a first traverses the path (9) in Translated into the lateral movement path (10) The first door single unit opened state in which the first door single unit (7) overlaps the second door single unit (8) translated in the second lateral movement path (10), and the series closed state. The first door unit (7) at the outside of the first door unit (7) is configured to be switched to the open state of the second unit door unit (7). A control lever (52a) with a cam driven roller (52b) at the tip is connected to the inner end side parallel link (52) close to the single unit (7). When the first door alone opened state or the second door alone opened state is changed to the series closed state, it acts on the cam driven roller (52b) to move the second door alone (8) into the second lateral movement path (10). In the sliding door device provided with the cam rail (17) that translates into the first lateral movement path (9) from
A first door unit locking means (36) is provided, and this locking unit (36) is movable at a terminal portion of the cam rail (17) so as to be movable back and forth in a horizontal direction orthogonal to the door unit lateral movement direction. The contact between the stopper (40) and the movable stopper (40) in the forward limit position prevents the first door unit (7) in the series closed state from laterally moving to the first door unit opened state. The movable stopper (40) is biased and held at the forward limit position, and the cam driven roller (52b) moves from the front end to the end of the cam rail (17). By the cam driven roller (52b) that moves from the forward limit position to the reverse limit position against the biasing force and moves away from the end of the cam rail (17), Configured to move to the forward limit position That.

In the sliding door device configured as described above, when the first second door unit is in a series closed state , the cam driven roller at the tip of the control lever is at the end of the cam rail on the first unit unit side, The single door is held at the closed position in the first lateral movement path. In this state, the movable stopper of the locking means is moved from the forward limit position to the reverse limit position against the urging force by the cam driven roller. It is in the state moved to. Therefore, the movable stopper is in a position that does not interfere with the fixed stopper and is in a state that allows the single door unit in the closed position to open. It can be switched to the open state. Of course, at this time, as the first door unit moves, the second rail unit moves in parallel from the closed position in the first side path to the second side path by the action of the cam rail and the control lever. The opening of a single unit will be allowed.

Contrary to the above, when the second single door in the series closed state is opened toward the first single door, the control lever is moved by the action of the cam driven roller and the cam rail on the first single door side. The parallel link is swung in the direction in which the single door moves in the direction of the second lateral movement path, but the fulcrum shaft of the control lever (the fulcrum shaft of the inner end side parallel link) at this time opens the second single door. The amount of movement in the direction is equal to the movement distance of the second door alone in the opening direction, but the control lever is swung in the opening direction of the second door alone by the action of the cam driven roller and the cam rail at the tip. The amount of movement of the cam follower roller in the cam rail is much larger than the amount of movement of the second door alone in the opening direction. Accordingly, the cam driven roller at the tip of the control lever moves away from the end of the cam rail in a short time from the start of opening of the second door alone, and the movable stopper is allowed to move to the forward limit position by the urging force. That is, the state in which the movable stopper is switched to the forward limit position after a lapse of a short time from the start of opening of the second door unit, and the first door unit can be prevented from opening from the closed position by contact with the fixed stopper, That is, the first door unit is switched to the closed state.

As is clear from the above description, according to the sliding door device having the above-described configuration, the second door single unit in the series closed state is opened to switch to the second door single unit open state that overlaps the outside of the first single unit. When this is done, the single door unit can be quickly locked in the closed position in the series closed state , preventing unintentional loose movement in the opening direction. It can be realized.

Claims (3)

Via a pair of parallel links in the lateral movement direction to a single door unit that can laterally move in the entire first lateral movement path on the inner side and a lateral movement body that is supported so as to be laterally movable parallel to the first lateral movement path. It is supported and includes a second single door unit that is movable back and forth between the first lateral movement path on the inner side and the second lateral movement path on the outer side, and that can move laterally in the entire second lateral movement path. From the series fully closed state where the first door unit and the second unit unit are serially connected in the first lateral movement path, the second door unit is translated into the second lateral movement path, A single door open state in which the single doors overlap, and a single door open state in which the second single door moved in parallel in the second lateral movement path is overlapped on the outside of the single door in the series closed state. Of the pair of parallel links in the lateral movement direction, the inner end side parallel to the first door unit in the closed state in series. A control lever having a cam driven roller at the tip is connected to the link, and the first door alone has the cam when the first door alone is opened or the second door alone is opened in series. In the sliding door device provided with a cam rail that acts on the driven roller to translate the second door alone from the second lateral movement path into the first lateral movement path,
A first door single lock means is provided, and the lock means is provided at the end of the cam rail so as to be movable back and forth in a horizontal direction perpendicular to the single door lateral movement direction, and in the forward limit position. The movable stopper includes a fixed stopper that prevents the first door unit in the series closed state from laterally moving to the first door unit opened state by contact with the movable stopper, and the movable stopper is attached to the forward limit position. The cam follower roller that is held in force and moves from the front end to the end of the cam rail is moved from the forward limit position to the reverse limit position against the biasing force and moved away from the end of the cam rail. The sliding door device is moved from the backward limit position to the forward limit position by the urging force by the cam driven roller.   The cam rail is configured by a cam groove provided in a main body attached to the first door unit, and the movable stopper is supported by the main body so as to be movable back and forth in a horizontal direction perpendicular to the lateral movement direction of the single door unit. A cam groove that protrudes from the movable member and has a cam groove that forms a terminal end of the cam groove and a cam surface on which the cam follower roller that enters the cam groove acts is formed on the movable member. The sliding door device according to claim 1, wherein the cam follower roller entering the groove portion acts on the cam surface to move the movable member to a retreat limit position against a biasing force. . The fixed stopper is attached to the guide rail of the laterally movable body that supports the second door unit via a parallel link, and when the first door unit returns to the position when it is in the series closed state, the fixed stopper is at the forward limit position. 3. The pull according to claim 1, wherein the movable stopper that is biased and held is moved backward on the back surface of the fixed stopper against the biasing force to pass over the fixed stopper. 4. Difference door device.

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